/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Utilities.h
This is the mathematically expected operator. FMatrix operator* calculates C = R.Transpose(L), so this is not equivalent to that.
namespace Chaos { namespace Utilities { [FMatrix33](API\Runtime\ChaosCore\Chaos\FMatrix33) Chaos::Utilities::Multiply ( const [FMatrix33](API\Runtime\ChaosCore\Chaos\FMatrix33) & L, const [FMatrix33](API\Runtime\ChaosCore\Chaos\FMatrix33) & R ) } }